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Open Source Async IO Library

libuv is a multi-platform support library with a focus on asynchronous I/O. It was primarily developed for use by Node.js, but it’s also used by Luvit, Julia, pyuv, and others.

  • Full-featured event loop backed by epoll, kqueue, IOCP, event ports.
  • Asynchronous TCP and UDP sockets
  • Asynchronous DNS resolution
  • Asynchronous file and file system operations
  • File system events
  • ANSI escape code controlled TTY
  • IPC with socket sharing, using Unix domain sockets or named pipes (Windows)
  • Child processes
  • Thread pool
  • Signal handling
  • High resolution clock
  • Threading and synchronization primitives


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